External carotid origin of the dominant vertebral artery. Case report.
D002339:Carotid Arteries / Q000002:abnormalities*; D002533:Cerebral Angiography; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis*; D013345:Subarachnoid Hemorrhage / Q000150:complications; D014711:Vertebral Artery / Q000002:abnormalities*